25072725 has 24 divisors (see below), whose sum is σ = 41847520. Its totient is φ = 13245120.

The previous prime is 25072711. The next prime is 25072757. The reversal of 25072725 is 52727052.

It is not a de Polignac number, because 25072725 - 2⁶ = 25072661 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 25072692 and 25072701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6642 + ... + 9708.

Almost surely, 2^25072725 is an apocalyptic number.

25072725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25072725 is a deficient number, since it is larger than the sum of its proper divisors (16774795).

25072725 is a wasteful number, since it uses less digits than its factorization.

25072725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189 (or 3184 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 25072725 is about 5007.2672187532. The cubic root of 25072725 is about 292.6850315863.

Adding to 25072725 its reverse (52727052), we get a palindrome (77799777).

The spelling of 25072725 in words is "twenty-five million, seventy-two thousand, seven hundred twenty-five".